/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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 */

package org.apache.flink.table.planner.plan.nodes.exec

import org.apache.flink.table.planner.delegation.StreamPlanner
import org.apache.flink.table.planner.utils.Logging

import java.util

import scala.collection.JavaConversions._

/**
  * Base class for stream ExecNode.
  */
trait StreamExecNode[T] extends ExecNodeBase[StreamPlanner, T] with Logging {

  def getInputEdges: util.List[ExecEdge] = {
    // TODO fill out the required shuffle for each stream exec node
    getInputNodes.map(_ => ExecEdge.DEFAULT)
  }
}
